Sometimes I have seen crashes in BWindow::determine_target(), and this could very well fix it.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13060 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kits/interface/Window.cpp

@@ -2207,8 +2207,7 @@ BWindow::task_looper()
 				}
 
 				if (!handler) {
-					handler = determine_target(msg, handler, 
+					handler = determine_target(fLastMessage, handler, false);
-						_use_preferred_target_(fLastMessage));
 					if (!handler)
 						handler = this;
 				}